文献类型：期刊文献

中文题名：基于改进Morgenstern-Price法的露天矿山边坡稳定性分析

英文题名：Slope stability analysis of open pit mine based on the improved Morgenstern-Price method

作者：龙泊含[1];雍睿[1];钟振[2];谭少南[2]

机构：[1]宁波大学岩石力学研究所,浙江宁波315211;[2]绍兴文理学院土木工程学院,浙江绍兴312000

年份：2023

卷号：5

期号：5

起止页码：78

中文期刊名：采矿与岩层控制工程学报

外文期刊名：Journal of Mining and Strata Control Engineering

收录：CSTPCD、、Scopus、北大核心、北大核心2020

语种：中文

中文关键词：Morgenstern-Price法;露天矿山;稳定性评价;可靠度分析

外文关键词：Morgenstern-Price method;open-pit mining;stability evaluation;reliability analysis

中文摘要：为解决传统Morgenstern-Price法未考虑岩体抗剪强度参数离散性的问题,引入Barton-Bandis准则对Morgenstern-Price法进行改进,考虑了岩体结构面抗剪强度参数JRC,JCS,rj的离散性,充分呈现了岩体结构面特征参数的真实统计分布特征,并利用此方法对边坡稳定性进行了分析;而后结合改进的Rosenblueth法对边坡的破坏概率进行了计算。以凤田矿山为背景,利用改进的Morgenstern-Price法计算得到稳定性系数为1.013,说明凤田矿山处于欠稳定状态;其结合改进的Rosenblueth法得到边坡破坏概率为38.759%,说明凤田矿山处于中等危险状态。通过与其他方法的评价结果对比发现,改进的Morgenstern-Price法既能用于计算边坡稳定性系数,又能与改进的Rosenblueth法相结合计算边坡破坏概率,是一种方便、有效的边坡稳定性分析方法,可满足矿山边坡现场施工的要求。

外文摘要：The internal rock mass is widely distributed with structural planes,and its shear strength exhibits nonlinear characteristics under different normal stresses,influenced by joint roughness coefficient(JRC),rock strength(JCS),and residual friction angle(jr).Based on the Mohr-Coulomb criterion,the traditional Morgenstern-Price method calculates normal stresses but fails to fully consider the variability of shear strength parameters of rock mass.This study introduces the Barton-Bandiscriterion into the Morgenstern-Price method,proposing an improved Morgenstern-Price method(referred to as MP-BB method hereafter).The MP-BB method is then used to analyze the slope stability and calculate the failure probability of the slope in conjunction with the improved Rosenblueth method.The research shows that the MP-BB method takes into account of the variability of shear strength parameters of rock mass(JRC,JCS,rj)associated with structural planes,fully reflecting the true statistical distribution characteristics of these parameters.The stability coefficient calculated based on the MP-BB method is more accurate than that of the M-C criterion.The correctness of the failure probability calculation results using the MP-BB method is verified using the Monte Carlo method.Therefore,the MP-BB method can be considered an effective slope stability analysis method.